Hearthpwn

Boommaster Flark

uses a collectible card as token (Goblin Bomb)

 Autodefense Matrix

Synergy with Bolvar, Fireblood

Blood Knight

A minion that buffs itself when something occurs

Pogo-Hopper

boomsday

Thunderhead

Summons tokens

Force of Nature

Nerfed into oblivion

Warsong Commander

A class card which is actually worse than non-class card from same or older set (Raid Leader is way better than warsong now)

The Glass Knight

Rarely played Legendary

Millhouse Manastorm

a card synergetic with gutmook's hero power (gutmook is a dungeon run boss)

Trade Prince Gallywix

Gives something to both your and your opponent's hand

Undertaker

attack increasing non-battlecry effect.

Micro Machine

a little bot

Anodized Robo Cub

Animal themed mech.

Scorp-o-matic

a 2 mana 1/2

Stubborn Gastropod

a beast that's useful in arena

Violet Wurm

An 8 mana 7/7.

Kalimos, Primal Lord

board filler

Bloodreaver Gul'dan.

A hero card that gives a hero power that deals damage. 

Dr. Boom, Mad Genius (one of the hp is deal 1 to all enemies and another is deal 3 damage)

Seven mana Hero Card.

Malfurion the Pestilent

Good Druid Legendary